Why is my Keurig flashing lights?

Keurig coffee makers are the most budget-friendly and easy-to-use coffee machines that help you to brew a cup of joe with the ease of pushing one button.

However, this doesn’t indicate that Keurig machines are simple devices; you may need to deal with an inappropriate signal like a Keurig machine blinking light madly and refusing to work.

There could be a few common reasons why the Keurig light starts flashing. In this article, we focused on the most common Keurig light alerts and how to fix them, so you get back to brew your morning drink as soon as possible!

What does it mean when Keurig is blinking?

Here are eight most likely reasons that Keurig machine lights keep blinking

  1. Keurig all lights flashing
  2. Using reusable K-cup
  3. Blue light flashes when the water reservoir is low.
  4. Keurig descale light flashing
  5. The water filter is incorrectly installed
  6. Clock and power light flashing
  7. Frother light flashing

Now, let’s discuss each of these reasons, their causes, and how to fix them.

Related post: KEURIG Mini Vs Slim

1) Keurig all lights on

If all lights (add water, heat, and medium cup size buttons) on your Keurig coffee machine keep flashing, then there might be a problem with the water filter or the needle.

Cleaning the Keurig water filters

  • Remove and empty the water reservoir. Check for any blockage in Valves at the bottom of the unit and if found, remove it. 
  • Make sure that the filter in the tank should be placed correctly in the holder.
  • Fill the tank with water and put it back.
  • Remove all cup capsules from the brew head. Run a water-only brew of 6-ounce cup size into an empty measuring cup. If you get exactly 6 ounces in the cup, your Keurig is ready to brew
  • However, if not! Remove the charcoal or carbon filter present inside the water tank and run the 6-ounce water-only brew cycle again
  • If you get the correct amount of water in the measuring cup then there must be some issue with the filter. Replace it and your problem will be solved.
  • However, If you are not using any filter or the correct volume was not measured when you replaced the filter, try brewing water only three more times.

Cleaning the Keurig Water needles

If you still don’t get the right amount, try cleaning the needle outlet and repeat the brewing cycle. Hopefully, your problem will be solved. You need a paper clip to clean the exit needles properly.

  • Turn the machine off and remove the water tank
  • Open the head of the machine and remove the K cup holder
  • Straighten one end of the paper clip and clean the needle area by moving it around.
  • Rinse the K cup holder with water properly.
  • Also, clean the top needles with a paper clip.
  • Assemble the machine again, Plug it and hopefully, the lights will stop flashing.

2) Using reusable K-cup – Red light Flashing

When you use a refillable k-cup and pack them too tightly, the red light on your Keurig coffee machine starts flashing.

If you pack a k-cup too tightly with too much coffee and tamp it too hard, water will not find a way to pass through. Keurig will interpret it as a blockage in the pipeline, and as a result, the descaling light starts flashing.

To resolve this problem, stop filling the k-cup so tightly. By rule of thumb, do not fill it beyond the required level.

If the problem you are facing is not due to the packing of coffee too tightly, try to remove the pod to check if your coffee machine allows you to run a coffee brewing cycle without a pod.

If the machine runs without the pod you find the culprit. If it doesn’t, then your machine might have some other error.

3)Blue light flashing when the water reservoir is low.

A blue light flashing alerts the Keurig coffee machine when the water level in the tank is low or empty.

Fill the tank with freshwater (minimum optimum water level required for all K-cup coffee makers to work correctly) to resolve this problem.

If the water reservoir is low beyond the required level, the machine will not start at all.

However, if adding water doesn’t reset the blue light alert, try turning the machine on and off and it will solve your problem.

4)Keurig descale light flashing

Water used for brewing contains a mineral that causes limescale to build up in your machine, which eventually results in blockage. The ultimate solution is to descale your machine immediately to get rid of this buildup. Once you descale your machine, the light will shut off automatically. .

Expert recommends that the descale process be done once every 3-6 months. Make sure to use filter water as hard water contain many minerals.

5) The water filter is incorrectly installed

Sometimes water filter is installed incorrectly, which causes the problem. However, this problem only occurs in the Keurig machines that have carbon filters present in the water tank

To resolve this problem:

  • Take out the water filter and rinse it with water
  • Put the filter at the bottom of the water tank correctly
  • Set the timer dial to 1-2 months from today’s date to allow you to be replaced at the right time.

6) Keuring Elite Clock and power light flashing

An error has occurred if your Keurig K-Elite coffee maker blinks the clock and the power button simultaneously. All You need is to unplug the machine from the wall outlet, plug it back in, then turn on the power button. This may cause your clock to reset.

If it doesn’t solve the problem try resetting the machine to factory settings.

7)Frother light flashing in Keurig Cafe

There are two different frother alerts in the Keurig K Cafe. If the light at the base of the frother is flashing, you may be trying to froth while the brewer is brewing coffee. Unfortunately, It is not possible to do so. The milk frother will start once the coffee is ready and the brewing is complete. If all the lights at the base of the Keurig frother are flashing, there are three possible issues. 

  • The whisk might not be attached properly to the frother 
  • Check that there is enough milk in the milk frother 
  • The milk frother might not be firmly attached to the base

Ensure that there is no such type of issue with your milk frother and the lights will stop flashing.

If you are confused wheter or not you can put milk in Keurig Coffee makers. Read our detailed guide on Can you put milk in Keurig machine

How do I reset my Keurig to solve the flashing problem?

Sometimes, all you can do to solve the flashing problem is simply reset your Keurig brewer.

  • Open and close the head of the machine. Remove any new or used k-cups from the machine.
  • If that doesn’t work unplug the machine and let it rest for some time.
  • Also, remove the water reservoir if your Keurig has a removable water reservoir.
  • Now plug the machine back and your Keurig must be back to normal.

How to use the Keurig coffee maker correctly?

Although Keurig coffee machines are simple to operate, you need to follow some simple steps to use the Keurig coffee machine preciously and prepare your cup of coffee as delightful as possible.

1)Ensure the pod of Keurig isn’t full.

Using too many coffee grounds to produce a stronger cup of coffee is not always a good idea. As this will clog your machine as water will not pass through the excess grinds.

By the rule of thumb, do not fill it beyond the required level, and as a result, the coffee will be brewed without any problem. If you want a strong coffee try a smaller brew size instead.

2)Ensure coffee is adequately grounded.

Although coffee grounds for a drip machine may be used in a Keurig, medium or medium coarse grounds work better with a Keurig.

Too fine grounds can result in a muddy cup of coffee, on the other hand too coarse grounds will result in a watery cup of coffee as the water will rush too rapidly through the grounds

So make sure to ground your coffee adequately before brewing.

3)Use the machine’s smallest cup setting.

Most Keurig machines can brew a 6, 8, or 10-ounce cup of coffee. The amount of grounds in the K cups or refillable cups does not increase as the cup size increases; instead, more water is used, resulting in a weaker cup.

If you love strong coffee brew a 6-ounce cup for the best flavor and if you want more, brew two 6-ounce cups instead of one larger cup.


We hope these tips have helped you fix your Keurig lights blinks problem. However, if these basic fixes fail Keurig doesn’t turn on all the lights, it could be the consequence of something much more serious.

Therefore, if the machine is still under warranty, we recommend that you contact Keurig for a professional examination or return it to the store where it was purchased.


Related Keurig Guides: